ANATOMY IN A NUTSHELL. 



215 



passes through the deep perineal space along the inner margin of the ramus of 

 the pubic bone. It now pierces the anterior layer of the triangular ligament, 

 Lying between the cms penis and the pubic hone, and gives a vaso-motor branch 

 to the corpus cavernosum, and passes to the dorsum of the penis to supply the 

 integument, glans and prepuce in the maleor clitoris in the female. It is called 

 the dorsal nerve of the clitoris in the female and is much smaller. 



PLATE LXXXII. 



CAPSU LAR LIGAMENT DIVIDED 



UUI SURFACE OF CAPSULAR LIGAMENT 



Ligaments of Hip-Joint. 



LESSON LIX. 



Under (E) great sciatic nerve and its branches we have, (Plate LX Will.) 

 (1) The great sciatic nerve and its branches which supply both muscles ami 

 integument below the knee-joint but muscles only above this joint. It sup- 

 plies thirty-seven muscles in all. It isthe largest nerve in the body and is a con- 

 tinuation of the sacral plexus, except the fourth sacral nerve, since thegreal sciatic 

 isformed by thelumbo-sacral cord and the anterior branches of the first, second 

 and third sacral nerves. After passing out of the pelvis below the Pyriformis 

 muscle it passes between the great trochanter and the tuberosity ^i the ischium. 

 It may perforate the Pyriformis muscle. It generally divides at the lower one- 

 third of the thigh into an external popliteal or peroneal and an internal popliteal 

 or popliteal nerve. This division may take place immediately after the nerve 

 leaves the pelvis. In its course down the hack of the thigh (Plate LXXVIII) it 



